Abstract

Based on the experiments on the movement of a Pt/Au bimetallic rod in a hydrogen peroxide solution, a model of the hydrodynamic mechanism of such movement is proposed. The proposed model is based on the equations of the hydrodynamics of a viscous fluid and the dynamics of particles and takes into account the hydrodynamic interaction of all charged particles in the fluid between themselves and the rod. The rod and the reaction-induced charge are modeled as a dipole aggregate; and the ions, as a cloud of small charged particles in the viscous fluid surrounding it. Numerical modeling and visualization of the calculations are carried out using a specially developed software package. The numerical calculations confirm the possibility of a dipole aggregate to move as a result of the action of the hydrodynamic force created by the formed flow of the surrounding fluid in all the considered cases of the distribution of small particles and their total charge. Qualitative agreement of the model values of the velocity and potential of the dipole with the experimental data is obtained.

中文翻译：

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纳米马达运动的流体力学模型

摘要

基于Pt/Au双金属棒在过氧化氢溶液中运动的实验，提出了这种运动的流体力学模型。所提出的模型基于粘性流体的流体动力学方程和粒子动力学方程，并考虑了流体中所有带电粒子与杆之间的流体动力学相互作用。杆和反应诱发的电荷被建模为偶极子聚集体；和离子，作为围绕它的粘性流体中的小带电粒子云。使用专门开发的软件包进行计算的数值建模和可视化。数值计算证实，在所有考虑的小颗粒分布及其总电荷的情况下，由于周围流体的形成流动所产生的流体动力的作用，偶极子聚集体移动的可能性。获得了偶极子速度和电位模型值与实验数据的定性一致性。